Chevrolet 1988 Light Duty Truck Repair Manual page 383

Tightening Sequence
T ighten b o lts in num ber sequence as show n.
Or, " A" group b o lts can be tig h te n e d first,
then " B " group bolts.
Torque Specifications
" A" G roup Bolts: 50 N-m (36 Ft. Lbs.)
" B " G roup Bolts: 43 N-m (32 Ft. Lbs.)
Figure 59— Intake Manifold Installation
Figure 60— Exhaust Manifold Installation
2.5 LITER L4 ENGINE 6A1-31
B-07994